Man charged over ramming car into Adelaide police station

A man has been charged after allegedly slamming his car into a police station and threatening officers with a knife.

The Honda sedan was driven into the automated doors of the station on Wakefield Street, just before 1:30am, before reversing into a patrol car which had moved to block its exit.

The 38-year-old Kilkenny man, who was known to police, was promptly arrested at the scene.

He was taken to the Royal Adelaide Hospital for a pre-existing medical condition, and will sit a bedside court hearing tomorrow morning charged with property damage, acts threatening harm, assault police, carry offensive weapon and resisting arrest.

The charges come as police minister Peter Malinauskas said more will be done to protect the state's officers, including the installation of bollards, fences and security screens.

A bomb robot was used to assess the scene. (9NEWS) ()

Mr Malinauskas says he has spoken with SA Police Commissioner Grant Stevens, who has reassured him changes are under way to protect officers and the public at stations.

"A substantial security upgrade is currently being undertaken by SA Police at a range of police stations throughout the state," he said earlier today.

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"There's a range of different measures that SA Police are putting in, that do include bollards, but also fencing arrangements, security screens within police stations, improved CCTV footage and the like."

Mr Malinauskas said the upgrade was inspired by incidents similar to that this morning, including a car ramming into Sturt Police Station in Adelaide's south in May this year and the shooting of police accountant Curtis Cheng in Parramatta in October 2015.

"The important thing is that where incidents occur you try and learn from them and that's clearly what's happened," he said.

"I have every confidence that the police commissioner is doing everything he can with the resources that he has available to make sure that our police stations are as safe as possible."